Fluid spraying device for dishwashing apparatus



Jan. s, 1946.

lu-l. F. I YMAN 2,392,540

FLUID SPRAYING DEVICEFOR DIS-IWASHING APPARATUS Filed Nov. 30, 1943 5 Sheets-Sheet 1 gli '5X WW1 ,711 *n l "l5 INVENTOR HomerE Iwlyman.

A TTORNE Y Jan. 8, 1946. H, F.-| YMAN 2,392,540

FLUID SPRAYING DEVICE FOR DISHWASHING APPRATUS Filed Nav. 30, 1943 3 Sheets-Sheet 2 INVE'TOR A TTRNE V Homer'l. Lyman.

Patented Jan. 8, 1946 UNITED vs'rirrlzs PATENT oFricE FLUID SPRAYING DEVICE FOR DISH- WASHING APPARATUS Homer F. Lyman, Nutley, N. J. Application November so, 194s,v serial No. 512,291

Claims.

This invention relates to fluid spraying devices for washers and, more particularly to a fluid spraying device for dishwashing apparatus.

The present invention provides a uid spraying device for a dishwasher which devicev directs a plurality of streams of ,washing fluid onto dishes Vbeing washedfrom a stream directing member, said member being actuated so that a stream of washing fluid from the stream directing member will pass through at least a part ofthe area of the .dishwashing Vapparatus through which another stream from .the stream directing member passes. The construction and arrangement of the fluid spraying device of the dishwasher of the present invention preferably is such that upon the failure of a ystream of washing'uid due tov clog`- ging of Qthe stream,'or for other reasons, the'dish or dishes normally washed by said stream will be washed by another stream of washing fluid thereby providing maximum washing efficiency.

The invention will be understood from the following description when considered in connection with the accompanying drawings forming a part thereof and in which: y Q

lFig. l1 is a side elevational View of the dishwashing apparatus embodying the present invention, parts vof the casing being broken away;

Fig. 2 is a sectional View taken on the line 2'-2ofFig.1; .l I I Fig. 3 isa plan'view taken onrthe line 3-3 o1"Fig.'1;`

Fig. 4 is a diagrammatic view Ashowing the stream directing mechanism of the present invention;

form of the invention; y y v Fig. 6V is a diagrammatic view illustrating the stream directing mechanism of the form of the invention shown in Fig. 5; y

Fig. 7 is a diagrammatic sideview of the stream directing mechanism of the form of the invention shown in Fig. 1 illustrating the stream of washing yfluid being directed on dishes from one po- Fig. 5 is a view similar to Fig. 3 but of another ing illustrated as not functioning; "'vFig. 8 is a view'similar to Fig. 7 but showing the streams directedon the dishes from another position of the mechanism; and Fig. 9 isa view similar to Fig. 7 with the mechanism in still another position. 7

lLike characters of reference refer throughout the several views. Referring to Fig. 1 of the drawings, the 'refersition of the mechanism. one of. said streams be- A to like` parts ence numeral I0 designates a casing whichV is substantially rectangular in cross-section. The

casing I0 comprises opposite ends walls I I and I2,.opposite sides walls" I3 and I4, a top I5 and a bottom I6 forming -therebetween a washing chamber I1. The opposite end walls and the side walls adjacent thereto are preferably welded together and the top and the bottom are Welded to the sides and ends sothat the Washing chamber I1 is water-tight. The'f casing I Il is supported on legs I8, I 9, 20 and 2I which legs each comprise anyL-shaped angle bar.i `Each of the legs is secured to the casing at a corner formed bythe joining of the opposite sides of the casing and the opposite ends thereof.

.A table adapted tosupport a dish rack 22 is positioned in the'chamber I1 and substantially intermediate the topV .I5 andbottom I6. The table comprises spaced L-shaped angle bars 23 and 24 extending between the opposite end walls I I and I2 adjacent to and in spaced relationship with the opposite side Walls vI3 and I4. 'Theangle bars 23 and 24 are secured at one end thereof to a support 25 extending along the end lwall II between the side walls I3 and I4 and at the opposite kend thereof to a support 26 extending along the end wall I2 between said sidefwalls. The rack 22, in the form of the invention disclosed comprises an elongated tray open at the top and at the bottom thereof and having a plurality of supporting meansfor dishes 21 so arranged as to support the dishes in a plurality of spaced rows extending laterally of the tray. The rack 22 may be inserted in the chamber I1 either through the opening 28 in the end wall I2 or the opening 29 in the end wall II. The opening 29 is closed by Adjacent the top of the chamber I1, wash spray pipes 3'2 extend substantially horizontally between the opposite end walls I I and I2, the opposite ends of.said pipesbeing spaced from said wallsand the pipes laterally spaced from each other. In the form of the invention'shown in Figs. 1 to f4 and 7 to 9, the distributing, pipes 32 and 32 are supported at one end 'thereof in the chamber -I'I byya rotatable tubular member 34 which is pivotally supported in a bearing 35 in the side wall I3 of the casing adjacent the end. wall I2. Each ofthe distributing pipes except pipe 32 is secured'to a T 33 and the Ts are connected together by nipples to form a rotate able tubular member'34. The pipe 32' is cona door 3U while the opening 28 is closed by a door nected to the rotatable member 34 by means of an elbow,33'. Plugs 36 close the end of the pipes 32 and 32' opposite the end thereof which is secured to the rotatable member 34. The pipes 32 have a plurality of axially spaced spray slots 33 therein through which washing uid is directed downwardly onto the dishes. Adjacent the end of distributing pipe 32 opposite to that secured to the rotatable member 34 the said low the angle bars 23 and 24 and in spaced rela tionship to the bottom l of the chamber. The pipesk are adapted to direct' washing iiuid up-r wardly into the rack ,'22 supported on the angle bars. The pipes 45, like the pipes `32, extend substantially horizontally between the opposite end walls Il and I2, the opposite ends ofthe pipes Vbeing spaced from said walls and the'pipes being laterally spaced from each other. In the form of the invention shown in Figs. l to 4 and '7 to 9, the pipes 45v are supported at the end thereof adjacent theendwall I2 by a rotatable member 41. Each of the spray pipes, with the exception of the pipe 45", is secured to a Tcon nection 46, the T-connections, withtheir connectingv nipples formingthe` feed pipe 41 which y is pivotally supported in a bearing in the side wall |.3.in yamanner similar to feed pipe 34. The pipe 45', is connected to the feed pipe 41 by means ofan elbow 48.Y Plugs 49 Vclose the end of the pipes 45. and' 45' adjacent'the end wall Il. A connecting link 50 ispivotally connected a't 31 tothe pipe 32' and pvotally connected at 5| to pipe 4,5'. The pipes 45 and 45' have a plurality of. axially spaced spray slots 52 which, as shown, are ip substantial vertical alignment with the .spacesbetween` the spray slots 33" in the pipes 3,2 and the pipe 32'.

Beneath the pipes v45 and in spaced relationship with the bottom vlli of the casing, is a plurality of perforatedstrainer pans 53 disposed contiguousf ly. and extending between the-end walls Ily and l2 and theside walls I3 and I4` thereby forming a washingV fluidV compartment 54 between the Dans 53 and bottom I6.' An overflow pipe 55 is provided so that the uid in the compartment 54 will not exceed a predetermined level.

Ving a shaft 58 connected by means of a con.-

nector759 toa shaft 60 of a pump (il.V The pump The motor 42, wheel 4l)V cal conduits 61. The operation of the motor 42 may be controlled by the switch 66, if desired, or by a separate switch.

The ,compartmenty 54 is drained when desired through a drain conduit 68 controlled by a drain valve 69. The washing fluid in the compartment 54, which fluid generally comprises a solution of soap and water, is heated by live steam injected through the live Vsteam injector 10. Other means such as steam-coils orelectrical heating units in Ithe compartment 54, or gas burners beneath the compartment 54 may be used to heat the washing fluid if so desired.

In operation, the rack 22 having the dishes 21 positioned therein which are.arrang\ed in spaced, laterally extending rows is placed on the supports 23 and 24 beneath the wash spray pipes 3'2. and the pipe 32 and above the pipes 45 and the pipe 45'. i The switch 66 is actuated to start the motor 51 which operates the pump 5I through the shaft 58., connection 59 and shaft fill.' 'I'he 'pump' 6l withdraws the washing solu- ,tion from the compartment. 54 through the suction conduit 62v and dischargesy the fluid into the discharge conduits B4 yandli. The fluid flows under pressure from the'l discharge conduit yt5 into the feed `pipes 41 and v34 thence into the wash spray pipes 45, 45and r32, 32 respectively. The washing-fluid in the pipes 45, 45' is projected upwardly through spray slots therein .in a plurality of streams 1l passing upwardly through the rack 22 and vover the dishes therein while the washing fluidA in the pipes. 32, 32 is directed downwardly through the spray slots 33 in a plurality of streamsV 12 which pass downwardly through' the rack 22 and over the dishes to be washed. The streams of washing fluid are under sufficient pressure to cause the foreign vsubstance .on the dishes to be washed therefrom.

Should the operation of the motor 42 also be controlled by the switch 66, the motor 4,22 will be seti-in operational', Athe same time as themotor 51,. `If the motor 4.2. is controlled by a separate switch, it may beset in operation at any time, either before or-after the motor 51`is placed in operation. Operation. ofthe motor .42. will.' cause thev wheel 49 to be rotated by the. shaft 4l in turn causing the pivot 39 to be rotatedaround the shaft 4I. Rotation rof the pivot 39 around theshaft 4| causes the crank. arm 38 to impart an upwardand downward reciprocal movement or oscillation of the pipes. 32, 32'as moreparticularly; shown in Figs. 4 and 7 to 9, since theseppes, inthe form of the invention shown in Figs. 1 to 4 and '1 to 9 are securedto the feed pipe 34 which. is;pivotally mountedV with respect to the wall i3 and theV discharge pipe 65. The pivot point .for the pipes 32,

32. is, therefore, the feed pipe 34. Oscillationof i the pipes 32, 32', as described, Willalso cause. the

6I Vis also mounted on the platform 56. `'The suction side of the pump is yin communication with the compartment 54 through'. the suction conduit 62, the intake of whichis protected by a strainer- 63. The discharge'of the pump isin commu-nicationYV with the. feedV pipes 34 and: 41 throughvdischarge conduits B4 and 65. The feed pipes 34`and 41 areconnected tothe conduit 65 by any well known type of` connection. which will permit pivotal movement ofthe. feed pipes in relation to the conduit 65. The motor 51 is con.- `trolle by an electrical switch 5G which is. inelecgtrical connection with the motor through electripipes. 45, 45 to be actuated in a manner similar tothe movement of pipes 32, 32' since the. connecting 1ink5. is pivotally connected to the pipes 3232.' and 45, 45the pipesv 45, 45 having as a pivot' point the. feed pipe 41. The. streams Ilv and 12 issuing from the.pipes..45, 45. and;32, 32' are. caused, by the oscillation. ofv said: pipes to move backward and ,forward in `.an arctoward and away from theopposite ends l l and l2 of the casing, the. streams sweeping transversely, of. the

streams `of washing uid 1I orlz will be traversed by the streams of Washing uid'next adjacent thereto. Withthis construction and arrangement, should a spray slot in the pipes 32, 32', 45, 45 become clogged by foreign particles washed from the dishes and circulated from the compartment 54 into said pipes, the area of the Washing chamber through which the stream of fluid fromthe clogged slot would normally pass is traversed by streams from slots adjacent the cloggedslot thereby assuring a thorough washing of the dishes over which the stream from the clogged slot normally passes.

The operation of the spray pipes 32, 32', 45, 45' is diagrammatically shown in Figs. 4 and 7 toa. In Fig. 4, which shows the movement of said pipes without reference to the spacing of the spray slotsv therein, one cycle of the operation of the wheel 40, crank arm 38 and pipes 32 and 45' is illustrated. An intermediate position is illustrated in full lines, the uppermost position is shown in dotted lines, and the lowermost position is designated by dot and dash lines.

In Figs. 7, 8, and 9 operation of the apparatusI of the present invention is shown with one of the spray slots as not functioning. The pipes 32 and 45' are shown Vwith spaced slots and streams of washing fluid 12 and 1I issuing respectively therefrom. One of the spray slots 33" positioned at 13 in the pipe 32' is shown as not functioning due to clogging. The spray Vpipes are shown in their lowermost position during a cycle of operation in Fig. 'l of the drawings, whilein Fig. 8 the pipes 32 and 45 are shown in their intermediate position, and in Fig. 9 the pipes are shown in their uppermost position. It will be noted that, with the construction and arrangement of apparatus shown in Figs. '7 to 9, as the pipes 32' and 45' are operated from the lowermost position, as shown in Fig. '7, to the uppermost position shown in Fig. 9, the area A which is in the part of the washing chamber I1 in which the dish 21 in the rack 22 is positioned and into which area the clogged spray slot positioned at 13 in the pipe 32' normally projects a stream of washing fluid, is swept by the streams of washing fluid 12' and 12" on opposite .sides of the clogged spray slot. A dish, such as dish 21, positioned in the area A would, therefore, be subjected to the stream of washing fluid from both of the streams 12' and 12" during a cycle of the wheel 4D. While the wheel 40 is illustrated as rotating in a clockwise direction, it will be understood that it could be rotated in a counter-clockwise direction without changing the principle of operation of the present invention.

In the form of the invention shown in Figs. 5

and 6, the pipes 32, 32' and 45, 45' are secured to feed pipes 34 and 41 respectively substantially intermediate the opposite ends of said pipes. The Dpes 32, 32' and 45, 45' are, therefore, pivoted substantially intermediate the opposite ends thereof instead of at one end thereof as in thev form oi' the invention shown in Figs. 1 to 4 and 7 to 9. The operation of the form of the invention disclosed in Figs. 5 and 6 is essentially the same as the operation of the form of the invention illustrated in Figs. 1 to 4 and 7 to 9.

Inasmuch as changes may be made in the form, location and relative arrangement'of the several parts of the invention without departing from the principles thereof, it will be understood the invention isv not to be limited, excepting by the scope of the appended claims.

'Whatisclaimedimf 1. A device for spraying, cleaning ffluid. comprising a supply tube for cleaning fluid, a vtubular member rotatably secured to said supply tube,` a distributing pipe fixed to said rotatable member, said rotatable member and'distributing pipe being spaced from an article to be cleaned, said dis,. .tributing pipe having a plurality of axiallyspaced discharge openings directed toward the said article, and means for oscillating the said rotatable member so that the said distributing pipe will move in an arc toward and away from the said article and` so that each oscillation of said rotatable member will cause a stream of uidfrom each of threen discharge openings to strike th same point on the article.

2. A device for spraying cleaning fluid compris. ing a pivotally mounted Vdistributing pipe, means through which a cleaning `fluid is conductedto said distributing pipe, the distributing pipe being spaced from an article to be cleaned, said pipe having a plurality of axially spaced discharge openings directed toward said article, and means for oscillating the distributing pipe so that said pipe will move in an arc toward and away from said article and each oscillation of said pipe'will cause a stream of fluid from each of at least three discharge openings to be directed to sub-'- stantially the same points on the article. v v

3. A fluid spraying device for a dishwashing machine, said device comprising a distributing pipe mounted to pivot on an axis extending transversely of the longitudinal axis of said pipe, means through which a fiuid is conducted to said distributing pipe, the distributing pipe being spaced from an article to be cleaned, said pipe having a plurality of axially spaced discharge openings directed toward said article, and means uid -is conducted to said distributing pipe. the' distributing pine being spaced from an article to be cleaned. said pipe having a plurality of axially spaced discharge openingr ldirected toward said article, and means for oscillating the distributing pipe so that said pipe will move on its pivot in an arc toward and away from said article and each oscillation of said pipe will cause a stream of fluid from each of at least three discharge onenings to be directed to substantially the same points on the article` 5. A fluid spraying device for a dishwashing machine. said device comprising a distributing pipe mounted intermediate the opposite ends thereof to pivot on an axis extending transversely of the longitudinal axis of said pipe, means through which a fluid is conducted to said distributing pipe. the distributing pipe being spaced from an article to ibe cleaned, said pipe having a plurality of axially spaced discharge openings directed toward said article, and means for oscillating the distributing pipe so that said pipe will move on its pivot in an arc toward and away from said article and each oscillation of said pipe will cause a stream of fluid from each of at least three discharge openings to be directedato subst'ani'.ially the same-.points on the'fa-rti'cle. l

6. lA rdevideffor spraying'cleaning'ffiuid ecmfipris,L ing 'a rotatably kmounted tubular member; Iiieans for' introducing a `cleaning yfluid into said tiiblar member,v apliirality of VdistributingV pipes fixed to and iii communication with'said rotatable inem' ber; said distributing Vpipes being spaced from vone another axiallyiof` said member; said rotatable niemberand distribiit'figpipes being spaced from an article tobe cleanedlsaid' distributing pipes having 'a pluralityv of axially spaced discharge openings directed toward the` said. article, and means 'for oscillatihg'the' said rotatable member so tiiat'the' said distributingfpipe's 'will moi/e in an arc toward and away from-the said article and sol that eaehosoillatin of'sai'd rotatable member will cause Va stream Vof -urd from each of at least three discharge opeiiingsfto be directed to substantially the same points on the article.

cle'aning ui'd Spraying device comprising a distributing vpipe mounted to pivot 'on an axis extending substantiallyhorizontally 'and transversely 'of theraxisfof said pipe, means through whichiluidisconducted to said pipe; the dis# tributi-ng pipe being spaced from an article to be cleaned, saidf pip'e having a plurality of axially spaced discharge openings directed toward said article, andmeans' for loscillating the distributing pipeso that said pipewillmove on its pivot in an arcand in a substantially vert-ical plane toward and away from said article and each. oscillation of said pipe willI cause a stream of fluid ro'm each ofhat le-ast three discharge openings to be directed to substantially the same points onvk the article.

8. A fluid spraying Vdevice for a dishwashing machine comprising a rotatablymcunted tubular member, means. for introducing a cleaning uid into said tubular member, a plurality of distributing vpipes fixed to .and in communication with said rotatable member, said distributing pipes being' spaced `from one another axially of said mem- Yber and extending' substantially parallel Vto one anothery inl substantially the samerplane, said rotatable member.v and distributing pipes being spaced from lan varticle to be cleaned, said distributing pipes having a pluralityv of axially spaced discharge openings directed toward the said article, and` means for oscillating thesaid rotatable member so that the said distributing pipes Will more in an arc toward and away from the said article ,andls'o that each oscillation for said' rotatable 'member will "cause a :stream foinuid'rroiii each of at least three discharge openings topass over the'same 'spaceon thearticle. Y

9. A devicefor spraying cleaning fluid' coniprisi-ng a pivotally mounted distributingrpi'pa .the distributing pipe being spaced from anV article tope cleaned, .another pivotally mounted distrib uting pipe, said other pipe being lspaced from said article in a direction opposite to that of saidirst: mentioned pipe, said pipe and. said other pipe having a plurality of axially spaced discharge openings directed toward said article, means through which cleaning fluid is conducted tosaid pipe and to said: other'pipe, and means for oscillating said pipes so that each of vsaid pipes-moves in an arc toward. and away `from said article and eaeh oscillation of said pipes will cause a. stream oi Afluid from each of three discharge openings. in eacho the pipes to pass over substantially the same surface of the article. v f

1'0. A fluid spraying device-for a dishwashing machine 'comprising a supply tube for cleaning fluid, a substantially horizontally eXtendi-ngupvper tubular member rotatably secured to said tionship to said articles to be washed, said `upper n and Said lower distributing pipesv having a plurality of axially spaced discharge openingsdi-v rected toward said articles, and'i'n'eans for oscillating said upper and said lower rotatable Vinembers so-'that the distributing pipes will moi/'e in an arc-toward and away from the said articles and so that each oscillation of said rotatable mem-bers will cause'a stream ofi-luid from each of three discharge openings in each of the pipes to pass over substantially the saine surface of an arti-Cie. f v

' Y HOMER F. LYM'AN. 

